Thank you for the information and the link 0soyoung. Precious!
10-15 days with those temps shouldn't bother a healthy japanese maple. Don't bring them indoors unless its into a cold room with minimal light. You can kill them with kindness, and many do.I'll go through 10-15 days with minimum temperatures in the low 10s and mid 20s during the day.
Should I take precautions?
I can bring them inside in a non heated but full of light part of the house.
I know, there's too much light there but I don't have a garage. Temps are in the 50s there and I don't know if the combination of these temperatures and the light would wake them up.I would not bring your tree inside where there is lots of light. You want to keep it dormant. Dormant trees don't need light, and light causes heat. Do you have an unheated garage?
Yes these are the exact conditions that can break dormancy.I know, there's too much light there but I don't have a garage. Temps are in the 50s there and I don't know if the combination of these temperatures and the light would wake them up.
What I thought is that if it sits on the bench it's closer to the house and better protected against the cold and wind. I'll wrap it with paper and put some mulch on top. Thanks for the tip Judy.Yes these are the exact conditions that can break dormancy.
If that tree is up on a bench then you can do better than that for protection outside. Even just on the ground is a better protection than being up off the ground. You can mulch and if you prepare next time, you can dig them in and then mulch. You can wrap frost cover around them for wind protection as well.
Thanks Judy and Don. I will do this and not worry until I see a polar bear knocking at the door ;-)Judy is correct about placing the tree on the ground. One thing that does is minimize the temperature fluctuations. The ground will stay a more consistent temperature than your bench, and your tree is less likely to dry out while sitting on the ground. Put your tree on the ground in the shade.
The roots/soil can freeze and stay frozen. Don't be scared.
Length of daylight hours does affect dormancy.
That's why I said to put the tree on the ground in the shade. There is a reason northern farmers paint tree trunks white.One thing I thought of not mentioned here - Early morning sun can be bad. If the tree is nice and frosty and that sun hits it, thawing it quickly, that's bad. Slower fluctuations are better.
My experience is not consistent with that statement. I have japanese maples in lower temperatures for long periods of time and they do not die. There are many other factors than temperature.
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